﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;

namespace Teein.Proxy.Bot.Helper
{
    class UnCheckCodeHelper
    {
            public Bitmap bmpobj;
            public UnCheckCodeHelper(Bitmap pic)
            {
                bmpobj = new Bitmap(pic);    //转换为Format32bppRgb
            }

            /// <summary>
            /// 根据RGB，计算灰度值
            /// </summary>
            /// <param name="posClr">Color值</param>
            /// <returns>灰度值，整型</returns>
            private int GetGrayNumColor(System.Drawing.Color posClr)
            {
                return (posClr.R * 19595 + posClr.G * 38469 + posClr.B * 7472) >> 16;
            }

            /// <summary>
            /// 灰度转换,逐点方式
            /// </summary>
            public void GrayByPixels()
            {
                for (int i = 0; i < bmpobj.Height; i++)
                {
                    for (int j = 0; j < bmpobj.Width; j++)
                    {
                        int tmpValue = GetGrayNumColor(bmpobj.GetPixel(j, i));
                        bmpobj.SetPixel(j, i, Color.FromArgb(tmpValue, tmpValue, tmpValue));
                    }
                }
            }

            /// <summary>
            /// 去图形边框
            /// </summary>
            /// <param name="borderWidth"></param>
            public void ClearPicBorder(int borderWidth)
            {
                for (int i = 0; i < bmpobj.Height; i++)
                {
                    for (int j = 0; j < bmpobj.Width; j++)
                    {
                        if (i < borderWidth || j < borderWidth || j > bmpobj.Width - 1 - borderWidth || i > bmpobj.Height - 1 - borderWidth)
                            bmpobj.SetPixel(j, i, Color.FromArgb(255, 255, 255));
                    }
                }
            }

            /// <summary>
            /// 灰度转换,逐行方式
            /// </summary>
            public void GrayByLine()
            {
                Rectangle rec = new Rectangle(0, 0, bmpobj.Width, bmpobj.Height);
                BitmapData bmpData = bmpobj.LockBits(rec, ImageLockMode.ReadWrite, bmpobj.PixelFormat);// PixelFormat.Format32bppPArgb);
                //    bmpData.PixelFormat = PixelFormat.Format24bppRgb;
                IntPtr scan0 = bmpData.Scan0;
                int len = bmpobj.Width * bmpobj.Height;
                int[] pixels = new int[len];
                Marshal.Copy(scan0, pixels, 0, len);

                //对图片进行处理
                int GrayValue = 0;
                for (int i = 0; i < len; i++)
                {
                    GrayValue = GetGrayNumColor(Color.FromArgb(pixels[i]));
                    pixels[i] = (byte)(Color.FromArgb(GrayValue, GrayValue, GrayValue)).ToArgb();      //Color转byte
                }

                bmpobj.UnlockBits(bmpData);
            }

            /// <summary>
            /// 得到有效图形并调整为可平均分割的大小
            /// </summary>
            /// <param name="dgGrayValue">灰度背景分界值</param>
            /// <param name="CharsCount">有效字符数</param>
            /// <returns></returns>
            public void GetPicValidByValue(int dgGrayValue, int CharsCount)
            {
                int posx1 = bmpobj.Width; int posy1 = bmpobj.Height;
                int posx2 = 0; int posy2 = 0;
                for (int i = 0; i < bmpobj.Height; i++)      //找有效区
                {
                    for (int j = 0; j < bmpobj.Width; j++)
                    {
                        int pixelValue = bmpobj.GetPixel(j, i).R;
                        if (pixelValue < dgGrayValue)     //根据灰度值
                        {
                            if (posx1 > j) posx1 = j;
                            if (posy1 > i) posy1 = i;

                            if (posx2 < j) posx2 = j;
                            if (posy2 < i) posy2 = i;
                        };
                    };
                };
                // 确保能整除
                int Span = CharsCount - (posx2 - posx1 + 1) % CharsCount;   //可整除的差额数
                if (Span < CharsCount)
                {
                    int leftSpan = Span / 2;    //分配到左边的空列 ，如span为单数,则右边比左边大1
                    if (posx1 > leftSpan)
                        posx1 = posx1 - leftSpan;
                    if (posx2 + Span - leftSpan < bmpobj.Width)
                        posx2 = posx2 + Span - leftSpan;
                }
                //复制新图
                Rectangle cloneRect = new Rectangle(posx1, posy1, posx2 - posx1 + 1, posy2 - posy1 + 1);
                bmpobj = bmpobj.Clone(cloneRect, bmpobj.PixelFormat);
            }

            /// <summary>
            /// 得到有效图形,图形为类变量
            /// </summary>
            /// <param name="dgGrayValue">灰度背景分界值</param>
            /// <param name="CharsCount">有效字符数</param>
            /// <returns></returns>
            public void GetPicValidByValue(int dgGrayValue)
            {
                int posx1 = bmpobj.Width; int posy1 = bmpobj.Height;
                int posx2 = 0; int posy2 = 0;
                for (int i = 0; i < bmpobj.Height; i++)      //找有效区
                {
                    for (int j = 0; j < bmpobj.Width; j++)
                    {
                        int pixelValue = bmpobj.GetPixel(j, i).R;
                        if (pixelValue < dgGrayValue)     //根据灰度值
                        {
                            if (posx1 > j) posx1 = j;
                            if (posy1 > i) posy1 = i;

                            if (posx2 < j) posx2 = j;
                            if (posy2 < i) posy2 = i;
                        };
                    };
                };
                //复制新图
                Rectangle cloneRect = new Rectangle(posx1, posy1, posx2 - posx1 + 1, posy2 - posy1 + 1);
                bmpobj = bmpobj.Clone(cloneRect, bmpobj.PixelFormat);
            }

            /// <summary>
            /// 得到有效图形,图形由外面传入
            /// </summary>
            /// <param name="dgGrayValue">灰度背景分界值</param>
            /// <param name="CharsCount">有效字符数</param>
            /// <returns></returns>
            public Bitmap GetPicValidByValue(Bitmap singlepic, int dgGrayValue)
            {
                int posx1 = singlepic.Width; int posy1 = singlepic.Height;
                int posx2 = 0; int posy2 = 0;
                for (int i = 0; i < singlepic.Height; i++)      //找有效区
                {
                    for (int j = 0; j < singlepic.Width; j++)
                    {
                        int pixelValue = singlepic.GetPixel(j, i).R;
                        if (pixelValue < dgGrayValue)     //根据灰度值
                        {
                            if (posx1 > j) posx1 = j;
                            if (posy1 > i) posy1 = i;

                            if (posx2 < j) posx2 = j;
                            if (posy2 < i) posy2 = i;
                        };
                    };
                };
                //复制新图
                Rectangle cloneRect = new Rectangle(posx1, posy1, posx2 - posx1 + 1, posy2 - posy1 + 1);
                return singlepic.Clone(cloneRect, singlepic.PixelFormat);
            }

            /// <summary>
            /// 平均分割图片
            /// </summary>
            /// <param name="RowNum">水平上分割数</param>
            /// <param name="ColNum">垂直上分割数</param>
            /// <returns>分割好的图片数组</returns>
            public Bitmap[] GetSplitPics(int RowNum, int ColNum)
            {
                if (RowNum == 0 || ColNum == 0)
                    return null;
                int singW = bmpobj.Width / RowNum;
                int singH = bmpobj.Height / ColNum;
                Bitmap[] PicArray = new Bitmap[RowNum * ColNum];

                Rectangle cloneRect;
                for (int i = 0; i < ColNum; i++)      //找有效区
                {
                    for (int j = 0; j < RowNum; j++)
                    {
                        cloneRect = new Rectangle(j * singW, i * singH, singW, singH);
                        PicArray[i * RowNum + j] = bmpobj.Clone(cloneRect, bmpobj.PixelFormat);//复制小块图
                    }
                }
                return PicArray;
            }

            /// <summary>
            /// 返回灰度图片的点阵描述字串，1表示灰点，0表示背景
            /// </summary>
            /// <param name="singlepic">灰度图</param>
            /// <param name="dgGrayValue">背前景灰色界限</param>
            /// <returns></returns>
            public char GetSingleBmpCode(Bitmap singlepic, int dgGrayValue)
            {
                Color piexl;
                string code = "";
                for (int posy = 0; posy < singlepic.Height; posy++)
                    for (int posx = 0; posx < singlepic.Width; posx++)
                    {
                        piexl = singlepic.GetPixel(posx, posy);
                        if (piexl.R < dgGrayValue)    // Color.Black )
                            code = code + "1";
                        else
                            code = code + "0";
                    }
                return BinstrToChar(code);
            }

            public char BinstrToChar(String binStr) 
            { 
                int[] temp = BinstrToIntArray(binStr); 
                int sum = 0;
                for (int i = 0; i < temp.Length; i++)
                { 
                    sum += temp[temp.Length - 1 - i] << i; 
                } 
                return (char)sum; 
            }

            private int[] BinstrToIntArray(String binStr)
            {
                char[] temp = binStr.ToCharArray();
                int[] result = new int[temp.Length];
                for (int i = 0; i < temp.Length; i++) { result[i] = temp[i] - 48; }
                return result;
            }

            //public MODI.Document _MODIDocument;
            //private void SetImage(string filename)
            //{
            //    // Bitmap nump = new Bitmap();
            //    // Bitmap myBitmap1 = new Bitmap(new fa;
            //    // set the image..
            //    try
            //    {
            //        _MODIDocument = new MODI.Document();
            //        _MODIDocument.Create(filename);
            //        //axMiDocView1.Document = _MODIDocument;
            //        //axMiDocView1.Refresh();
            //    }
            //    catch (System.Runtime.InteropServices.COMException ee)
            //    {
                   
            //    }
            //}
            //public string Analyse()
            //{
            //    string texts = "";
            //    if (_MODIDocument == null) return texts;
            //    try
            //    {
            //        // add event handler for progress visualisation
            //        //_MODIDocument.OnOCRProgress += new MODI._IDocumentEvents_OnOCRProgressEventHandler(this.ShowProgress);
            //        // the MODI call for OCR
            //        // _MODIDocument.OCR(_MODIParameters.Language,_MODIParameters.WithAutoRotation,_MODIParameters.WithStraightenImage);
            //        _MODIDocument.OCR(MODI.MiLANGUAGES.miLANG_CHINESE_SIMPLIFIED, true, true);
            //        //this.textBox1.Text = (_MODIDocument.Images[0] as MODI.Image).Layout.Text;
            //        //MessageBox.Show((_MODIDocument.Images[0] as MODI.Image).Layout.Text);
            //        texts = (_MODIDocument.Images[0] as MODI.Image).Layout.Text;
            //        //statusBar1.Text = "Ready.";
            //        _MODIDocument.Close(false);
            //        _MODIDocument = null;

            //    }
            //    catch (Exception ee)
            //    {
            //        // simple exception "handling"
            //    }
            //    return texts;
            //}
        
    }

    
}
